SB PROP @ ARL $ARLP017
ARLP017 Propagation de K7RA

ZCZC AP17
QST de W1AW 
Propagation Forecast Bulletin 17 ARLP017
From Tad Cook, K7RA
Seattle, WA April 28, 2023
To all radio amateurs 

SB PROP ARL ARLP017
ARLP017 Propagation de K7RA

At 0134 UTC on April 27, The Australian Space Weather Forecasting
Centre issued a geomagnetic disturbance warning:

"An equatorial coronal hole is currently elevating solar wind
speeds. Combined with the anticipated impact from a recent CME on
April 27, geomagnetic activity is expected to be at G0-G1 levels
over April 27-28, with a slight chance of an isolated period of G2."

Solar and geomagnetic indicators moved in opposite directions this
week. Average daily sunspot numbers over April 20-26 made a dramatic
drop from 146.9 to 91.4, and average daily solar flux from 164.5 to

		
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